<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 2. 为 ECharts 准备一个具备大小（宽高）的 DOM -->
      <div id="main" style="width: 750px;height:400px;"></div>
    </el-card>
  </div>
</template>

<script>
// 1.导入 echarts
import echarts from 'echarts'
import _ from 'lodash'
export default {
  data () {
    return {
      // 需要合并的数据
      options: {
          title: {
              text: 'ECharts 入门示例'
          },
          tooltip: {},
          legend: {
              data:['销量']
          },
          xAxis: {
              data: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
          },
          yAxis: {},
          series: [{
              name: '销量',
              type: 'bar',
              data: [5, 20, 36, 10, 10, 20]
          }]
      }
    }
  },
  created() {

  },
  //此时，页面上的元素，已经被渲染完毕了！
  async mounted() {
    // 3.基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById('main'));
    const {data: res} = await this.$http.get('reports/type/1')
    if (res.meta.status !== 200) {
      return this.$message.error('获取折线图数据失败!')
    }
    // 4.准备数据和配置项
    const result = _.merge(res.data, this.options)
    // 5.展示数据
    myChart.setOption(result)
  },
  methods: {

  }
}
</script>

<style lang="less" scoped>
</style>
